Binary of Julia Beta v0.2-prerelease does not work on Mac OS X 10.6

[alemi]

After installing the binary of Julia Beta v0.2-prerelease on my MacBook (Mac OS X 10.6.8), I run julia and I get the following:

exec bash -c "PATH='/Applications/Julia-0.2.0-pre-c0e861a1c1.app/Contents/Resources/julia/bin:/usr/bin:/bin:/usr/sbin:/sbin' FONTCONFIG_PATH='/Applications/Julia-0.2.0-pre-c0e861a1c1.app/Contents/Resources/julia/etc/fonts' GIT_EXEC_PATH='/Applications/Julia-0.2.0-pre-c0e861a1c1.app/Contents/Resources/julia/libexec/git-core' GIT_TEMPLATE_DIR='/Applications/Julia-0.2.0-pre-c0e861a1c1.app/Contents/Resources/julia/share/git-core' TK_LIBRARY='/System/Library/Frameworks/Tk.framework/Versions/8.5/Resources/Scripts' exec '/Applications/Julia-0.2.0-pre-c0e861a1c1.app/Contents/Resources/julia/bin/julia'"

dyld: lazy symbol binding failed: Symbol not found: __dyld_find_unwind_sections
Referenced from: /Applications/Julia-0.2.0-pre-c0e861a1c1.app/Contents/Resources/julia/bin/../lib/julia/libjulia.dylib
Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: __dyld_find_unwind_sections
Referenced from: /Applications/Julia-0.2.0-pre-c0e861a1c1.app/Contents/Resources/julia/bin/../lib/julia/libjulia.dylib
Expected in: /usr/lib/libSystem.B.dylib

[Process completed]

Any suggestions how to fix this?
Please note that the binary of Julia Release v0.1.2 works fine on my system.

[pao]

cc @ViralBShah @staticfloat

[staticfloat]

My bet is we're not distributing our patched libubwind for osx properly. I will update this issue when I have a fix.

[Keno]

This might have been something that was introduced after 10.6. We might have to fall back to system libunwind on 10.6.

[ViralBShah]

Also coming up on the mailing list:

https://groups.google.com/forum/?fromgroups=#!topic/julia-users/z6tV_ICHnDA

[staticfloat]

@alemi can you download the latest .dmg file and try it out? I have made a modification that might fix this issue.

[alemi]

The same error:

exec bash -c "PATH='/Applications/Julia-0.2.0-pre-ee92383fb8.app/Contents/Resources/julia/bin:/usr/bin:/bin:/usr/sbin:/sbin' FONTCONFIG_PATH='/Applications/Julia-0.2.0-pre-ee92383fb8.app/Contents/Resources/julia/etc/fonts' GIT_EXEC_PATH='/Applications/Julia-0.2.0-pre-ee92383fb8.app/Contents/Resources/julia/libexec/git-core' GIT_TEMPLATE_DIR='/Applications/Julia-0.2.0-pre-ee92383fb8.app/Contents/Resources/julia/share/git-core' TK_LIBRARY='/System/Library/Frameworks/Tk.framework/Versions/8.5/Resources/Scripts' exec '/Applications/Julia-0.2.0-pre-ee92383fb8.app/Contents/Resources/julia/bin/julia'"
dyld: lazy symbol binding failed: Symbol not found: __dyld_find_unwind_sections
Referenced from: /Applications/Julia-0.2.0-pr-ee92383fb8.app/Contents/Resources/julia/bin/../lib/julia/libjulia.dylib
Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: __dyld_find_unwind_sections
Referenced from: /Applications/Julia-0.2.0-pre-ee92383fb8.app/Contents/Resources/julia/bin/../lib/julia/libjulia.dylib
Expected in: /usr/lib/libSystem.B.dylib


[Process completed]

[staticfloat]

@alemi; can you gist the output of otool -L /usr/lib/libSystem.B.dylib, as well as nm /usr/lib/system/libunwind.dylib for us? I don't have a 10.6 machine to test on, but it looks like fixing this won't be quite as easy as I thuoght. Thanks!

[alemi]

otool -L /usr/lib/libSystem.B.dylib

/usr/lib/libSystem.B.dylib:
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.11)
/usr/lib/system/libmathCommon.A.dylib (compatibility version 1.0.0, current version 315.0.0)

nm /usr/lib/system/libunwind.dylib

nm: can't open file: /usr/lib/system/libunwind.dylib (No such file or directory)

Guess something is wrong: there is no such file "libunwind.dylib".

[staticfloat]

That is a problem. @loladiro looks like 10.6 is significantly different than 10.7/10.8. Thoughts about what we can do?

[Keno]

We can just use OS X's unwind on 10.6. Profiling might now work but at least it would build again.

[BobPortmann]

I think this is related to my comment:

#4159 (comment)

[mlubin]

Just from the uninformed observer, couldn't you build separate versions for 10.6 and 10.7/10.8? This isn't unheard of.

[staticfloat]

Yes, definitely. I'm just not entirely sure what the necessary build incantation should be. @loladiro, is there a USE_SYSTEM_LIBUNWIND flag that I need to set or something? Also, do we need to detect 10.6 and print out a warning that the Profiler doesn't work?

[vtjnash]

This fixes building a separate binary on 10.6.